TY  - JOUR
AU  - V. V. Filippov
TI  - On a theorem of Kneser
JO  - Differencialʹnye uravneniâ
PY  - 1987
SP  - 2068
EP  - 2074
VL  - 23
IS  - 12
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1987_23_12_a6/
LA  - ru
ID  - DE_1987_23_12_a6
ER  -